Guapo, I had a similar situation some time back. I wrote the branch about the sex abuse and the elders met with me to discuss the issue. They were cool about it and did admit that there have been instances of abuse but that it was always handled in the best way possible.
When I asked why those things happened, their best response was that Jehovah allows it so we have to wait on him to react.
I might recommend either don't go to the meeting or go and try to distance yourself personally from the issue. Maybe you can say someone mentioned it to you or you heard the story on the news to keep you free from more drama with the Elders.
Anyway, wish you the best. You don't owe those dudes any explanations but if you choose to sit with them be prepared mentally to not get angry.